Draft-equalizer.



PATENTED APR. 14, 1908.

G. J. TOBIN. DRAFT EQUALIZER.

APPLICATION FILED D110. 24, 1907.

W'fnesses.

' or machine to which the device is to CHARLES J. TOBIN, OF STUART,IOWA.

DRAFT-EQUALIZER.

Specification of Letters Patent. Application filed December 24,

Patented April 14-, 1908. 1907. Serial No. 407,962.

To all whom it may concern:

Be it known that I, OHAELEs J. TOBIN, a citizen of the United States,residing at Stuart, in the county of Guthrie and State of Iowa, haveinvented certain new and useful Improvement in Draft-Equalizers, ofwhich the following is a specification.

This invention relates to draft equalizers, more particularly to devicesof this character adapted to employ four or five horses, as required,and has for its object to improve and simplify the construction, reducethe expense of manufacture without decreasing the utility andefficiency.

With these and other objects in view, the invention consists in certainnovel features of construction, as hereafter shown and described andspecifically pointed out in the claims, and in the drawings employed forillustrating the embodiment of the invention:Figure l is a plan view ofthe improved device arranged for the employment of four horses.

Fig. 2 is a front elevation of the improved device. Fig. 3 is anenlarged perspective view of thecoupling clevis or clip.

ig. 4 is a plan view, similar to Fig. 1, illustrating the arrangement ofthe device when employed for five horses.

The improved device comprises a clevis or clip device 10 having atransverse horizontal slot 11 in one end and a diagonal slot 12 in theother end, the slots having perforations 1314 to receive the securingpins 1516. The horizontal slot 11 is designed to be con nected by thepin 15 to the usual clevis portion 17 of the plow beam 18, as shown inFig. 1, or the other draft appliances of the vehicle be applied. Devicesof this character are employed in connection with harvesters, gang andother plows, the larger forms of harrows and like implements, but isalso adapted to any form of vehicle or machinery upon which devices ofthis character are usually em- Tgloved, and we do not therefore desireto be 'mited in any manner to the apparatus with which the device isemployed. For the purose of illustration the device is shown in ig. 1applied to a conventional plow clevis 17, as before noted.

Pivoted by the pin 16 in the diagonal slot 12 of the clip 10 is a draftbar 19, having perforations 20-2l at its ends and an intermediateperforation 22 spaced a short distance from the perforation 21.Experiment has shown that the bar 19 should be about 12 the beam 26being inches long from center to center of the perforations 20-21 andthe perforation 22 spaced about 2 inches from the perforation 21, but itwill be understood that these prorelatively long evener beam 26, theends of 85 provided with swingle trees 27-28 of the usual form. Theevener beam 26 is provided with perforations at its ends, a perforationat its center to receive the pin 25, and intermediate perforations 3334,

the perforation 33 being disposed between the central perforation andthe end of the beam to which the swingle tree 27 is coupled, and theperforation 34 being near the perforation by which the swingle nected tothe evener beam, the object to be hereafter explained. By this means twohorses may be connected to one end of the bar 19, the beam 26, it willbe noted, being coupled to the higher end of the beam 19.

Connected to the lower end of the beam 19 by a chain 29, which iscoupled by a suitable link in the aperture 20, is an evener beam 30having swingle trees 3132 connected thereto. It will be understood thatthe chain 29 will be of suflicient length to enable the horses to behitched to the swingle trees 31-32 in advance of the horses hitched tothe swingle trees 2728, the chain 29 being shown broken, to indicatethis fact.

By the roportion and arrangement of the parts it will be noted that thechain 29 passes beneath the evener beam 26 and the swingle tree 27, andsufiiciently near the inner end of the swingle tree 27 to avoid thehorse hitched to the swingle tree 27.

The link 24 and the chain 29 are coupled to the bar 19 at equaldistances from the pin 16, so that the two teams will draw equally upontree 28 is coninterference with the clevis or clip 10, the leveragebeing thus 10o equalized.

' The arrangement above described will be employed when four horses areused, and when five horses are required the link 24 will be sh' ted atone end to the and at the other end to the perforation 33, as shown inFig. 4, while the swingle tree 28 will be sh' ted to the perforation 34,and the swingle tree 27 replaced by an ordinary double tree evener 35with its 36-37, the beam 26 being thus transformed into an ordinarythree horse evener, no

perforation 22 swingle trees Z the evener-30 and its swingle trees51132.

. beam 26 may be utilized both for a four horse and five horseequalizer.

It will be noted that by transferring the link 24 to the aperture 22 andcoupling the evener 26 to the link by its aperture 33 the leverage isequalized between the two horses at one end of the evener beam, as shownin Fig. 4, and the single horse upon the longer end of the beam.

By the arrangement of the clip or clevis 10 with the slot 12 arrangedobliquely so that the bar 19 is disposed at an angle to the horizontal,the chain 29 is disposed below the beam 26, and does not thereforeinterfere with its 0 eration. This inclined arrangement of tile bar 19is an important feature of the invention, and materially increases itsefficiency and utility, and enables the device to operate without unduefriction or wear of the arts.

T e device is extremely simple in construction, may be inexpensivelymanufactured, and readily adapted to the various uses to which devicesof this character are applropriated.

aving thus described the invention, what is claimed as new is 1. In adraft equalizer, a clip having a horizontal slot in one end and anoblique slot in the other end, a draft bar pivoted in said oblique slotand sup orted thereby at an angle to the horizonta an evener beamswinging from the higher end of the bar and provided with spaced draftappliances, a connecting element cou led to the lower end of theinclined bar an extending beneath the evener, and adapted to receivedraft appliances at its forward end.

2. In a draft equalizer, a clip havin cou ling means at one end and withan ob ique y disposed slot in the other end, a draft bar pivoted in saidoblique slot and maintained thereby in an inclined position and providedwith a plurality of spaced apertures, a rear evener beam provided with aplurality of spaced a ertures and with draft appliances adjustab yconnected thereto, means for coupling said evener beam by its aperturesto the higher portion of the draft bar by the apertures thereof, aforward evener beam having draft appliances connected thereto, and meansfor coupling said forward evener beam to the lower portion of said draftbar.

3. In a draft equalizer, a clip having coupling means at one end andwith an obli ue slot in the other end, a draft bar pivot lly connectedin said oblique slot and provided with a plurality of spaced apertures,and draft appliances adapted to be connected to said bar at oppositesides of said clip.

In testimony whereof I afiix my signature, in presence of two witnesses.

CHARLES J 'IOBIN.

Witnesses:

WM. PUTNEY, BEN GARDNER

